In medicine, bilirubinuria is an abnormality in which conjugated bilirubin is detected in the urine.

In this concentration of conjugated bilirubin in the blood appears as yellowness of the mucous membranes and sclera.

[citation needed] The most common cause of bilirubinuria is hepatocellular disease.

The increase of stercobilin (urobilin) in the feces and urine is caused by the enhanced intracellular hemolysis of erythrocytes.

Formed an unconjugated bilirubin entering the intestine, gives a large number of stercobilinogen (urobilinogen).